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Finding the Fourth Proportional to 617,689.41, 852,425.82 and 345,750.54

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Solution

The fourth proportional to 617,689.41, 852,425.82 and 345,750.54 is: 477,143.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,689.41 : 852,425.82 = 345,750.54 : x
  2. Step 2: Convert to fraction form
    617,689.41/852,425.82 = 345,750.54/x
  3. Step 3: Cross multiply
    617,689.41x = 852,425.82 × 345,750.54
  4. Step 4: Simplify right side
    617,689.41x = 294,726,687,574.94
  5. Step 5: Solve for x
    x = 294,726,687,574.94/617,689.41
  6. Step 6: Final answer
    x = 477,143.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.